diff --git a/Development-Environment-Setup:-Ubuntu.md b/Development-Environment-Setup:-Ubuntu.md
index bf26654..4254aa0 100644
--- a/Development-Environment-Setup:-Ubuntu.md
+++ b/Development-Environment-Setup:-Ubuntu.md
@@ -71,8 +71,8 @@ exec $SHELL
 
 git clone https://github.com/sstephenson/rbenv-gem-rehash.git ~/.rbenv/plugins/rbenv-gem-rehash
 
-rbenv install 2.5.8
-rbenv global 2.5.8
+rbenv install 2.7.3
+rbenv global 2.7.3
 ruby -v
 ```